package site.brood.common.log.aspect;


import com.alibaba.fastjson.JSON;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpMethod;
import org.springframework.stereotype.Component;
import org.springframework.validation.BindingResult;
import org.springframework.web.multipart.MultipartFile;
import site.brood.common.core.ip.IpUtil;
import site.brood.common.core.str.StrUtil;
import site.brood.common.core.web.ServletUtil;
import site.brood.common.log.annotation.Log;
import site.brood.common.core.log.BusinessStatus;
import site.brood.common.log.pojo.LogOperationDto;
import site.brood.common.log.service.LogService;
import site.brood.common.security.util.SecurityUtil;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Collection;
import java.util.Map;

/**
 * 日志切面, 拦截所有controller请求，写入日志
 *
 * @author kong
 */
@Slf4j
@Aspect
@Component
public class LogAspect {

    @Autowired
    private LogService logService;

    /**
     * 处理完请求后执行
     *
     * @param joinPoint 切点
     */
    @AfterReturning(pointcut = "@annotation(controllerLog)", returning = "jsonResult")
    public void doAfterReturning(JoinPoint joinPoint, Log controllerLog, Object jsonResult)
    {
        handleLog(joinPoint, controllerLog, null, jsonResult);
    }

    /**
     * 拦截异常操作
     *
     * @param joinPoint 切点
     * @param e 异常
     */
    @AfterThrowing(value = "@annotation(controllerLog)", throwing = "e")
    public void doAfterThrowing(JoinPoint joinPoint, Log controllerLog, Exception e)
    {
        handleLog(joinPoint, controllerLog, e, null);
    }

    protected void handleLog(final JoinPoint joinPoint, Log controllerLog, final Exception e, Object jsonResult)
    {
        try
        {
            // *========数据库日志=========*//
            LogOperationDto operLog = new LogOperationDto();
            operLog.setStatus(BusinessStatus.SUCCESS.ordinal());
            // 请求的地址
            String ip = IpUtil.getIpAddr(ServletUtil.getRequest());
            operLog.setOperIp(ip);
            operLog.setOperUrl(ServletUtil.getRequest().getRequestURI());
            String username = SecurityUtil.getUsername();
            if (StrUtil.isNotBlank(username))
            {
                operLog.setOperName(username);
            }

            if (e != null)
            {
                operLog.setStatus(BusinessStatus.FAIL.ordinal());
                operLog.setErrorMsg(StrUtil.substring(e.getMessage(), 0, 2000));
            }
            // 设置方法名称
            String className = joinPoint.getTarget().getClass().getName();
            String methodName = joinPoint.getSignature().getName();
            operLog.setMethod(className + "." + methodName + "()");
            // 设置请求方式
            operLog.setRequestMethod(ServletUtil.getRequest().getMethod());
            // 处理设置注解上的参数
            getControllerMethodDescription(joinPoint, controllerLog, operLog, jsonResult);
            // 保存操作日志到数据库
            // logService.operLogAdd(operLog);
        }
        catch (Exception exp)
        {
            // 记录本地异常日志
            log.error("==前置通知异常==");
            log.error("异常信息:{}", exp.getMessage());
            exp.printStackTrace();
        }
    }


    /**
     * 获取注解中对方法的描述信息 用于Controller层注解
     *
     * @param log 日志
     * @param operLog 操作日志
     * @throws Exception
     */
    public void getControllerMethodDescription(JoinPoint joinPoint, Log log, LogOperationDto operLog, Object jsonResult) throws Exception
    {
        // 设置action动作
        operLog.setBusinessType(log.businessType().ordinal());
        // 设置标题
        operLog.setTitle(log.title());
        // 设置操作人类别
        operLog.setClientChannel(log.operatorType().getName());
        // 是否需要保存request，参数和值
        if (log.isSaveRequestData())
        {
            // 获取参数的信息，传入到数据库中。
            setRequestValue(joinPoint, operLog);
        }
        // 是否需要保存response，参数和值
        if (log.isSaveResponseData() && StrUtil.isNotNull(jsonResult))
        {
            operLog.setJsonResult(StrUtil.substring(JSON.toJSONString(jsonResult), 0, 2000));
        }
    }

    /**
     * 获取请求的参数，放到log中
     *
     * @param operLog 操作日志
     * @throws Exception 异常
     */
    private void setRequestValue(JoinPoint joinPoint, LogOperationDto operLog) throws Exception
    {
        String requestMethod = operLog.getRequestMethod();
        if (HttpMethod.PUT.name().equals(requestMethod) || HttpMethod.POST.name().equals(requestMethod))
        {
            String params = argsArrayToString(joinPoint.getArgs());
            operLog.setOperParam(StrUtil.substring(params, 0, 2000));
        }
    }

    /**
     * 参数拼装
     */
    private String argsArrayToString(Object[] paramsArray)
    {
        String params = "";
        if (paramsArray != null && paramsArray.length > 0)
        {
            for (Object o : paramsArray)
            {
                if (StrUtil.isNotNull(o) && !isFilterObject(o))
                {
                    try
                    {
                        Object jsonObj = JSON.toJSON(o);
                        params += jsonObj.toString() + " ";
                    }
                    catch (Exception e)
                    {
                    }
                }
            }
        }
        return params.trim();
    }

    /**
     * 判断是否需要过滤的对象。
     *
     * @param o 对象信息。
     * @return 如果是需要过滤的对象，则返回true；否则返回false。
     */
    @SuppressWarnings("rawtypes")
    public boolean isFilterObject(final Object o)
    {
        Class<?> clazz = o.getClass();
        if (clazz.isArray())
        {
            return clazz.getComponentType().isAssignableFrom(MultipartFile.class);
        }
        else if (Collection.class.isAssignableFrom(clazz))
        {
            Collection collection = (Collection) o;
            for (Object value : collection)
            {
                return value instanceof MultipartFile;
            }
        }
        else if (Map.class.isAssignableFrom(clazz))
        {
            Map map = (Map) o;
            for (Object value : map.entrySet())
            {
                Map.Entry entry = (Map.Entry) value;
                return entry.getValue() instanceof MultipartFile;
            }
        }
        return o instanceof MultipartFile || o instanceof HttpServletRequest || o instanceof HttpServletResponse
                || o instanceof BindingResult;
    }

    // /**
    //  * 定义AOP签名 --> 项目代码(所有class名成带有Controller字符的)
    //  */
    // @Pointcut("execution(* site.brood..*Controller.*(..))")
    // public void webLogProject() {
    // }

    // /**
    //  * 环绕通知,环绕增强，相当于MethodInterceptor
    //  *
    //  * @param pjp
    //  * @return
    //  * @throws Throwable
    //  */
    // @Around("webLogProject()")
    // public Object surround(ProceedingJoinPoint pjp) throws Throwable {
    //     try {
    //         System.out.println("方法名为:" + pjp.getSignature().getName());
    //         System.out.println("类名:" + pjp.getSignature().getDeclaringType().getSimpleName());
    //         System.out.println("方法所属类的类名:" + pjp.getSignature().getDeclaringTypeName());
    //         System.out.println("方法声明类型:" + Modifier.toString(pjp.getSignature().getModifiers()));
    //         //获取传入目标方法的参数
    //         Object[] args = pjp.getArgs();
    //         for (int i = 0; i < args.length; i++) {
    //             System.out.println("第" + (i+1) + "个参数:" + args[i]);
    //         }
    //         // 2、执行时
    //         Object obj = pjp.proceed();
    //         // 如果是 AjaxJson
    //         if (obj instanceof AjaxJson) {
    //             System.out.println("返回：");
    //             System.out.println(obj);
    //         }
    //         return obj;
    //     } catch (Throwable e) {
    //         throw e;
    //     }
    // }

}
